Artur Siekielski created CASSANDRA-12862: --------------------------------------------
Summary: LWT leaves corrupted state Key: CASSANDRA-12862 URL: https://issues.apache.org/jira/browse/CASSANDRA-12862 Project: Cassandra Issue Type: Bug Components: Core Environment: Cassandra 2.1.16, 3-node cluster with RF=3, NetworkTopology with 1 DC Reporter: Artur Siekielski When executing "INSERT ... IF NOT EXISTS" (with consistency LOCAL_QUORUM) while the concurrency level is high (about 50 simultaneous threads doing inserts, for the same partition key but different clustering keys) sometimes the INSERT returns applied=False, but the subsequent SELECTs return no data. The corrupted state is permanent - neither the INSERT or SELECTs succeed, making the PK "locked". I can easily reproduce this - for 100 simultaneous threads doing a single insert I get 1-2 corruptions. -- This message was sent by Atlassian JIRA (v6.3.4#6332)